Clamp



Dc. 29, 1936. v

w. G. HEIBER' ET AL CLAMP Fil d Marchfib, 1935 INVENTORS William 6: Hdber and A TTORNEY TET CLAMP William G. Heiber and Emil R. Meng, Rochester, N. Y., assignors to said William G. Heiber, doing business as William Heiber & Son, Rochester, N. Y.

Application March 30, 1935, Serial No. 13,919

3 Claims. (Cl. 12-107) This invention relates to a clamp, and more means of a suitable hinge member 3, and 4 desigparticularly to a mechanism used for holding a nates a locking projection or extension provided lasted shoe during the operation of cementing a on the free end of the clamping member 2 to be sole thereto or performing other necessary operaengaged by the retaining means, as will be detions on the shoe, and has for its object to afford scribed presently, although the latter may engage 5 a simple construction that can be readily maand retain the clamping member 2 in any suitnipulated by the operator and which will mateable manner other than with the projection 4. rially assist in speeding up the operations on According to a preferred embodiment of the the shoe. invention, an operating lever 6 is provided hav- 10 A more particular purpose of the invention is ing a bifurcated portion 1 that straddles the free 10 to afford a practical and inexpensive construcend of the clamping member I and is pivoted tion of few parts which can readily be brought thereto at 8 whereby the lever 6 can be swung into proper relation to a shoe and in which the on the clamping member I from its extreme outer clamping members can be held positively either position illustrated in Figs. 2 and 3 to its extreme in a partially open position to permit of correctinner position shown in Fig. 1. l5 1y positioning the shoe upper and other parts, or The pivoted lever B carries the retaining memin a completely closed position after the necesher, which is preferably loop-shaped, consisting sary preparatory operations are completed. of. a strap bent upon itself and designated gen- To these and other ends, the invention consists erally at 9 with its ends straddling the bifurcated go in the arrangement and construction of parts portion 1 and pivoted eccentrically thereto at H). that will appear clearly from the following de- The strap or loop-shaped member 9 may have scription when read in conjunction with the acofiset portions II to clear the rivet or pivot 8 companying drawing, the novel features being when swung thereover, as shown in Figs. 1 and 3, pointed out in the claims following the specificaand may be reduced in width at its outer end to tion. fit closely over the locking portion 4, as shown In the drawing: in Fig. 4. Fig. 1 is a plan view of one embodiment of the It is desirable to provide for taking up wear invention, showing the clamping members enbetween the retaining member and the locking tirely closed, or in final operative position; portion 4 to insure a tight engagement between Fig. 2 is a plan View showing the position of the clamping members, and to effect this, there is 30 the parts when the clampingmembers are held employed an adjustable contact element or screw in a partially open position, which position is l3 engaging a threaded opening in the end of the occupied when the clamp is preliminarily posiretaining member 9 and threaded surfaces in the tioned on the shoe while stretching the upper or adjacent walls of said loop member, the contact performing other necessary preparatory operapost being adjustable to engage the side of the 35 tions; locking projection 4 and held in its adjusted posi- Fig. 3 is a plan view of the construction when tion by the nut M. the clamping members are separated, and The clamping members are shown in open or 4 is n e d elevation ok n f om ri ht separated relation in Fig. 3, and are initially '6 f of brought into preliminary engagement with a pre- 40 The construction shown is in the nature of an welted upper, positioned on a last, by inserting improvement on the structure disclosed in Patth clamping members b t t t and up ent NO. dated November 7, and is per swinging the retaining member 9 ver the designed more particularly 9 use in comil'ection locking projection 4 and moving the lever 6 back w h W shoes m which the to its extreme position until the parts assume the 45 hmmanly stltchw', to the uppfer httmg and relation shown in Fig. 2. The frictional engagelasted Such Clampmg mechamsm bemg Intended ment of the several parts is such as to hold the to f fi i g gif g g ggfi i im clamp in this position on the shoe upper while on o e as e as e 0 p amen mg the upper, lining and welt may be stretched or the outer sole.

Referring more particularly to the drawing in otherwise manually adjusted into the exact dewhich like reference characters refer to the same sired relation with the insole to which the upper parts throughout the several views, a and 2 (1195- is secured. The operator has both hands free ignate a pair of separable clamping members to perform these preliminary operations on the which are preferably pivotally connected by shoe, the clamp being held thereon by the re- 55 taining member 9 while in the position shown in Fig. 2.

When the upper, lining and welt are all positioned with relation to the clamp to the'satisfaction of the operator, he then throws the lever B fromthe position shown in Fig. 2 to that shown in Fig. 1, during which movement the pivotal point [0 passes outwardly and around the pivotal point 8 until it is past the center of the latter, with relation to the point of contact between retaining member 9 and the locking portion 4, so as to hold the clamping members tightly in operative relation and prevent any accidental displacement. To release the clamping members, it is necessary to grasp thelever 6 and draw it outwardly from the position shown in Fig. 1 until the pivot point lfl has passed inwardly around the pivot point 8, whereupon theretaining member 9 is free to be swung away from the clamping member 2 and the latter can be separated from clamping member I.

While the invention has been described with relation to a more or less specific form and arrangement of parts, it is not confined to the details set forth, and this application is intended to cover any modified arrangements coming within the purposes of the invention or the scope of the following claims.

We claim:

1. A shoe clamp comprising a pair of separable clamping plates, an operating lever having a biiurcated portion straddling and pivotally secured to one of said clamping plates, a locking portion on the other clamping plate, and a retaining member having its ends straddling and pivotally connected to said operating lever eccentrically thereof, said retaining member straddling said locking portion and other clamping plate and movable over said plate while assuming locking position, the pivotal points of the operating lever and retaining member being substantially in line with the point of engagement between the retaining member and locking portion when the parts are in clamping position.

2. A shoe clamp comprising a pair of separable clamping plates, an operating lever having a bifurcated portion straddling and pivotally secured to one of said clamping plates, a locking portion on the other clamping plate, and a loop-shaped retaining member having its ends straddling and pivotally secured to said bifurcated portion of the operating lever eccentrically thereof, said loop-shaped retaining member straddling said other clamping plate and locking portion and en-- gageable with the latter to hold the clamping plates in either a partially open relation or an entirely closed relation, the pivotal points of the operating lever and retaining member being substantially in line with the point of engagement between the retaining member and locking portion when the parts are in clamping position.

3. A shoe clamp comprising a pair of separable clamping plates, an operating lever havinga bifurcated portion straddling and pivotally secured to one of said clamping plates, a loop-shaped retaining member having its ends straddling and pivctally secured to said bifurcated portion of the operating lever eccentrically thereof, the other of said clamping plates having a locking projection,

the loop shaped portion of said retaining member being engageable with said locking portion and acting to hold the clamping plates in either a partially open relation or an entirely closed relation depending upon the position of the operating lever, and means adjustable with relation to the loop shaped portion of the retaining member for contacting the said locking portion.

WILLIAM G. HEIBER. EMIL R. MENG. 

